Answered on Jun 01st, 2015 at 12:35 PM
Your landlord has a legal obligation to keep your apartment habitable, and that includes fixing the conditions you listed. You can start an action (or hire a lawyer to start an action) to force him to make the repairs. You may be entitled to a rent reduction if the conditions are serious enough and you can prove he ignored your requests for a significant time. If the lead poisoning can be linked to paint used in the apartment, you may have a serious lawsuit on behalf of your child, as well.